Leading Research: in Feeding & Nutrition
Precision formulation of diets for laying hens can lead to significant cost savings to farmers through improved feed efficiency and better quality eggs. Investment in R&D will enable the development of practical nutritional management strategies which can be applied at a production system level to improve flock feed efficiency and egg quality.
The security of feed grains at economically viable prices is also important to egg business and will be pursued through cross-sector research collaboration. The outcomes of this investment will be to improve egg quality and reduce costs to egg businesses.
This flyer provides a quick summary of each of the research projects underway in the 19/20 financial year.
The aim of this project is to understand how different lighting regimes and diets during rearing, either used singularly or together, can improve flock uniformity, egg production and persistency of production, egg size and egg quality, from 16 to 90+ weeks.
This short project builds on a recently completed project 'The economics of layer diet amino acid levels throughout lay'.
The outcome of this project will provide insight into how to optimise egg shell quality at peak lay through nutritional management from 18 weeks. Hens of lighter and average weight will be trial-fed on diets of either higher or lower nutritional density to 90 weeks.
This series of studies investigated the presence and extent of an ‘appetite’ for an extra-dietary source of Ca in laying hens and established the optimum Ca and P concentrations and ratios of dietary Ca for optimum egg production and nutrient digestibility.
Pullet and layer flock uniformity: an epidemiological industry-based approach to improve feed efficiency
Benchmarking of flock uniformity and performance regarding persistency and longevity of lay achieved
Two experiments were conducted to determine the available phosphorus (AP) requirement of laying hens and to examine the effect of different dietary AP and calcium (Ca) concentrations on egg production and egg shell quality from the start of lay to 80 weeks of age.
Economic constraints and public concerns have compelled the poultry industry to increasingly use a range of cheaper, alternative plant-derived feedstuffs in feed formulations and eliminate the use of animal by-product meals.
Legumes for poultry: Improvement of lupins and lathyrus for broilers and egg layers by enzyme treatment
This research is aimed at making locally-produced legumes, lupins and lathyrus, acceptable substitutes for expensive imports such as soybean meal or animal-protein meals for inclusion in poultry diets.
This study aims to determine the required energy intake of layer hen strain in terms of dietary energy concentration, feed intake, egg output, body weight and body fat content, in order to design diets that are nutrition and cost effective.
The aim of the project was to investigate the effects of diet change over the short and long term in chickens, to determine whether this caused an inflammation of the hindgut tissues. .
When fed canola meal, the presence of a compound called sinapine in the meal often causes hens to lay eggs with a fishy taint.This study aims to identify the exact levels of sinapine that cause this, and to eliminate the phenomenon.
This publication contains data on the net energy values of some cereal grains and vegetable protein sources that are commonly used in the Australian poultry broiler and layer industries.
This proposes that the Australian egg and poultry industry to incorporate canola and cottonseed meal in poultry diets.Canola and cottonseed meal is proven to be both economical and high in protein.
Though sorghum is an important component of layer hen diet, it is highly susceptible to contamination of sorghum ergot.This project aims to determine the safe practical limits for use of ergot contaminated sorghum grain in layer diets.
Effects of commercial feed enzymes in wheat-based diets on egg and egg shell quality in imported strains of laying hen
At the time of commencement of this project, very little research had been conducted into feeding layer hens and results were not consistent among studies of the benefits of adding commercial feed enzyme preparations to the diets of laying hens.
Due to evidence of paralysis in hens resulting from diets including a type of grain called Lathyrus, this study examined long term feeding trials of a new type of grain developed by the Centre for Legumes in Mediterranean Agriculture (CLIMA).
The need to expand the protein options available to the poultry industry was the catalyst for this study.
This report reviews the amino acid tryptophan which is an essential amino acid in the diet of Australian poultry.Reliable values of total and digestible tryptophan in feedstuffs are needed because tryptophan is often the third most limiting amino acid in poultry diets.